精神的三分论:Plato proposes that the human psyche has three parts,i.e.reason,spirit,and appetite.By using this theory of the tripartite soul,Plato gives an account of how man can be virtuous.A virtuous man is one in whom the three parts of his soul play their proper roles and are in harmony with one another. 柏拉图认为人的灵魂有三部分,即原因,精神和欲望.由使用三重灵魂这种理论,柏拉图能用以描述人为何是善良的:因为一个善良的人的灵魂的三部分在其起到合适的作用,并且互相和谐的存在一起.
